Answer:
a bottleneck effect
Explanation:
Genetic drift refers to the change in the allele frequencies in a population due to chance (random) events. The bottleneck effect, also known as population bottleneck, can be defined as a severe case of genetic drift caused by a drastic reduction in the population size. The bottleneck effect is well known to cause the loss of important genetic variation since alleles that were present in the original population are lost, thereby limiting its genetic diversity. One of the most common causes that may lead to a population bottleneck in a natural population is environmental disasters (e.g., earthquakes, floods, etc).
The appropriate response is Mountain ranges. It is a progression of mountains or slopes went in a line and associated with high ground. A mountain framework or mountain belt is a gathering of mountain ranges with closeness in shape, structure, and arrangement that have emerged from a similar reason, as a rule an orogeny.
Answer:
d) descent with modification
Explanation:
According to my research on Darwin's theory of natural selection, I can say that based on the information provided within the question the term being described is called descent with modification. This basically refers to the most dominant traits being passed down from generation to generation, and being modified little by little in each lineage. Which is done through natural selection.
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The difference between pH 3 and pH 4 is a 10 fold difference in the concentration of H+